// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
#include <pollux/core/plan_node.h>
#include <pollux/exec/operator.h>

#include <pollux/vector/arrow/abi.h>

namespace kumo::pollux::exec {
    class ArrowStream : public SourceOperator {
    public:
        ArrowStream(
            int32_t operatorId,
            DriverCtx *driverCtx,
            const std::shared_ptr<const core::ArrowStreamNode> &arrowStreamNode);

        virtual ~ArrowStream();

        RowVectorPtr getOutput() override;

        BlockingReason isBlocked(ContinueFuture * /* unused */) override {
            return BlockingReason::kNotBlocked;
        }

        bool isFinished() override;

        void close() override;

    private:
        /// Return last error in Arrow array stream.
        const char *getError() const;

        bool finished_ = false;
        std::shared_ptr<ArrowArrayStream> arrowStream_;
    };
} // namespace kumo::pollux::exec
